[IGBF-3503] Implement UCSC REST API logic in IGB - JIRA UNCC

Details

Task:

Add a new module to IGB for ingesting UCSC REST API responses.
Implement all required APIs for communication to the new UCSC REST API and write testcases.
Change the existing IGB code to integrate with the new module APIs instead of DAS APIs

relates to

IGBF-3603 Implement logic to load data for Wiggle file type

1.	Implement an API to get the UCSC available genomes	Closed	Jaya Sravani Sirigineedi
2.	Implement an API to get the available datasets for a selected genome	Closed	Jaya Sravani Sirigineedi
3.	Implement an API to get the chromosomes for a selected genome	Closed	Jaya Sravani Sirigineedi
4.	Implement logic to load data for genePred file type	Closed	Jaya Sravani Sirigineedi
5.	Implement an API to get the dna sequence for the selected genome region span	Closed	Jaya Sravani Sirigineedi